From: Stephen Hemminger <shemminger@vyatta.com>
To: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Cc: netdev@vger.kernel.org
Subject: Re: What makes a good fake MAC address?
Date: Wed, 22 Apr 2009 14:13:26 -0700 [thread overview]
Message-ID: <20090422141326.2f8a419d@s6510> (raw)
In-Reply-To: <200904221348.27357.inaky@linux.intel.com>
On Wed, 22 Apr 2009 13:48:27 -0700
Inaky Perez-Gonzalez <inaky@linux.intel.com> wrote:
>
> Hi All
>
> The Intel i2400m WiMAX driver behaves as an ethernet device, and
> currently when sending packets to the netdev stack, it fakes an
> ethernet header, sets the "from" mac address to zeroes and the "to"
> to it's own MAC address.
>
> The WiMAX network can be considered to be a point-to-point (up to the
> gateway) connection, all IP based, so there are not MAC addresses
> from our gateway (not to mention that it can change behind us).
>
> The problem with using a zero mac address is that it confuses the
> bridging software (and maybe others). I was wondering, what would be
> a fake mac address we could put in there that is legal for this kind
> of "faking"? [or the closest thing to legal?]
>
> Thanks!
>
You want really want hw to have real mac, but if not use
random_ether_addr()
next prev parent reply other threads:[~2009-04-22 21:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 20:48 What makes a good fake MAC address? Inaky Perez-Gonzalez
2009-04-22 21:13 ` Stephen Hemminger [this message]
2009-04-22 21:13 ` Eric Dumazet
2009-04-22 21:28 ` Inaky Perez-Gonzalez
-- strict thread matches above, loose matches on Subject: below --
2009-04-22 21:34 Mark Smith
2009-04-22 22:15 ` Inaky Perez-Gonzalez
2009-04-22 22:25 ` Stephen Hemminger
2009-04-22 22:38 ` Inaky Perez-Gonzalez
2009-04-22 22:59 ` Stephen Hemminger
2009-04-22 23:35 ` Inaky Perez-Gonzalez
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